本日接到保障在11g通过数据泵导入数据时报错，ORA-39245，查询文档发现说明如下
[oracle@evenpc ~]$ oerr ora 39245
39245, 00000, "import job requires export dump file \"%s\""
// *Cause: A Data Pump IMPORT or SQL_FILE operation was being performed
// but not all of the files from the Data Pump export dump file
// set were included.
// *Action: Check the export log file and make sure all of the files that
// were exported are included in the current job. The import log
// file also lists the export names of the missing files.
用户说导出给了一个文件，导入的时候死活导入不了。
检查用户导出操作命令如下：
expdp user/passwd directory=dump_dir dumpfile=test%U.dmp parallel=2 logfile=test.log schemas发现用户用了parallel参数，导出的时候绝对不止生成一个文件，问题找到了，用户导入的时候只导入了一个文件，就会报错了。
修改下导入操作命令如下
impdp user/passwd directory=dump_dir dumpfile=test01.dmp,test02.dmp parallel=2 schemas=test logfile=test_imp.log问题解决。